Lac Cornette is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec.

• Latitude: 49° 6' 18'' North   (decimal: 49.1050341)
• Longitude: 69° 47' 40'' West   (decimal: -69.7945117)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac Cornette
• GPS Coordinate Locator Map: Lac Cornette Lat/Long